public static void AddModelError(this ModelStateDictionary modelState, CodeRunResult crr)
 {
     if (crr == null)
     {
         return;
     }
     foreach (var err in crr.ErrorMessages)
     {
         modelState.AddModelError("", err);
     }
     foreach (var err in crr.Exceptions)
     {
         modelState.AddModelError("", err);
         modelState.AddModelError("", err.Message);
     }
 }
 public static void AddModelStateError(this Controller ctrl, CodeRunResult crr)
 {
     ctrl.ModelState.AddModelError(crr);
 }